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STMicroelectronics LM224ADT
- Part No.:
- LM224ADT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM224ADT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:11,189
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Product details
Overview
LM224ADT from STMicroelectronics is a quad low-power operational amplifier with rail-to-rail output swing, designed for single-supply (3–30 V) and dual-supply (±1.5–±15 V) operation in industrial signal conditioning, sensor interfacing, and power supply monitoring. It delivers 1.3 MHz gain bandwidth, 100 dB large-signal voltage gain, and 3 mV max input offset voltage at 25 °C, enabling precision DC amplification in battery-powered and 24 V industrial systems.
For engineers reviewing the LM224ADT datasheet, LM224ADT pinout, LM224ADT application, or LM224ADT equivalent, key selection criteria include its guaranteed 3 mV Vio (A-grade), 800 V HBM ESD rating, –40 °C to +105 °C operating range, and compatibility with SO14/TSSOP14/QFN16 packages - critical for thermal management, board space constraints, and automotive-adjacent industrial designs.
Technical Context
The LM224ADT integrates four independent high-gain op-amps with internal frequency compensation, supporting unity-gain-stable operation across its full supply range. Its input stage includes PNP transistors enabling ground-sensing common-mode input (0 V to VCC – 1.5 V), while the output stage provides rail-to-rail sourcing/sinking capability up to ±40 mA per channel.
It features low quiescent current (375 µA/amplifier typ.), low input bias current (20 nA typ.), and robust absolute maximum ratings: ±16 V dual supply or 32 V single supply, with infinite output short-circuit duration below 15 V supply - making it suitable for fault-tolerant analog front-ends in programmable logic controllers and motor drive feedback circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 1.3 MHz - supports stable closed-loop gain up to ~100× at 10 kHz for sensor signal amplification without phase margin loss. |
| Input Offset Voltage (25 °C) | 3 mV max - enables accurate DC-coupled amplification of mV-level thermocouple or bridge outputs without trimming. |
| Supply Voltage Range | Single: 3–30 V; Dual: ±1.5–±15 V - interoperable with 3.3 V microcontrollers, 5 V logic, and 24 V industrial rails. |
| Input Common-Mode Range | 0 V to VCC – 1.5 V - allows direct sensing of ground-referenced signals (e.g., current shunt, RTD bridges) without level-shifting. |
| Output Current (sourcing/sinking) | ±40 mA typical - drives 100 Ω loads directly or interfaces with ADC reference buffers and LED indicators. |
| ESD Rating (HBM) | 800 V - exceeds IEC 61000-4-2 Level 2 requirements for industrial control panel interfaces. |
| Operating Temperature | –40 °C to +105 °C - qualified for under-hood automotive auxiliary modules and factory-floor PLC I/O cards. |
Pinout & Package
LM224ADT is available in SO14 package (JEDEC MS-012), with exposed pad not present. Pin functions are standardized across all quad op-amp variants in the LM224x family.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input of Amp A | Accepts differential input signal; referenced to non-inverting input (Pin 2) for inverting amplifier configuration. |
| 2 | Non-inverting input of Amp A | Used for non-inverting gain stages or as reference node in comparator applications with hysteresis. |
| 3 | Output of Amp A | Delivers amplified signal; capable of sourcing/sinking ≥40 mA into resistive loads. |
| 4 | VCC– (negative supply / GND) | Common return for all four amplifiers; must be low-impedance to minimize crosstalk and noise coupling. |
| 5 | Inverting input of Amp B | Independent input path; electrically isolated from Amp A inputs except via shared supply rails. |
| 6 | Non-inverting input of Amp B | Enables dual-channel instrumentation or differential pair configurations without external buffering. |
| 7 | Output of Amp B | Provides second independent output; channel separation >120 dB at 1 kHz ensures minimal inter-channel interference. |
| 8 | VCC+ (positive supply) | Power rail for all amplifiers; decoupling capacitor (100 nF) required within 1 cm for stability at high frequencies. |
| 9 | Inverting input of Amp C | Third channel input; layout symmetry with Pins 1/5/9 reduces PCB trace length mismatch in multi-stage filters. |
| 10 | Non-inverting input of Amp C | Supports cascaded gain stages where each op-amp handles one functional block (e.g., filter → gain → clamp). |
| 11 | Output of Amp C | Third output; usable for redundant monitoring or parallel processing of identical sensor signals. |
| 12 | Inverting input of Amp D | Final channel input; enables 4-channel simultaneous acquisition in data loggers or multi-zone temperature controllers. |
| 13 | Non-inverting input of Amp D | Allows independent reference setting per channel - e.g., different offset voltages for calibrated sensor offsets. |
| 14 | Output of Amp D | Fourth output; supports active filtering, level translation, or driving multiple ADC inputs with matched timing. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range (3–30 V single) | Eliminates need for dedicated LDOs in mixed-voltage systems - powers directly from 12 V or 24 V industrial rails. |
| Input common-mode range includes ground | Enables direct connection to 0 V-referenced sensors (e.g., strain gauges, current shunts) without external bias networks. |
| Low input offset voltage (3 mV max) | Reduces calibration overhead in 12-bit ADC systems - contributes <0.3% full-scale error at 1 V output span. |
| Low supply current (375 µA/amplifier) | Permits 4-channel analog signal conditioning in battery-operated devices with <1.5 mA total quiescent draw. |
| High ESD immunity (800 V HBM) | Withstands repeated handling and field wiring events in unshielded industrial enclosures without protection diodes. |
Applications
| Industrial Sensor Signal Conditioning | Programmable Logic Controller (PLC) Analog Input Modules |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from pressure transducers and RTDs in factory automation systems. IC Role / Device Role / Timing Role: Quad op-amp configured as 4-channel instrumentation amplifier front-end with gain-setting resistors and anti-aliasing filters. Use Value: Single SO14 device replaces four discrete op-amps, reducing PCB area by 60% and eliminating inter-channel gain mismatch beyond 0.1%. |
Use Scenario: Converting 4–20 mA loop currents to 0–5 V for ADC sampling in modular I/O cards. IC Role / Device Role / Timing Role: Transimpedance amplifier + buffer stage per channel, with rail-to-rail output ensuring full 0–5 V compliance over temperature. Use Value: Guaranteed 3 mV Vio and –40 °C to +105 °C operation maintain <0.5% accuracy across ambient extremes without recalibration. |
| DC Power Supply Monitoring | Automotive Body Control Module (BCM) Auxiliary Circuits |
|
Use Scenario: Real-time monitoring of 12 V/24 V rail voltages and current limits in switched-mode power supplies. IC Role / Device Role / Timing Role: Comparator (with internal hysteresis) and precision voltage follower for feedback path isolation. Use Value: Wide 3–30 V supply range allows self-powered operation from monitored rail; low 375 µA current minimizes loading effect. |
Use Scenario: Signal conditioning for cabin temperature sensors, seat position potentiometers, and mirror control feedback. IC Role / Device Role / Timing Role: Low-noise buffer and level shifter interfacing resistive sensors to 3.3 V microcontroller ADCs. Use Value: 800 V HBM ESD rating withstands cable harness discharge events; A-grade Vio ensures <1 °C error in NTC-based thermal sensing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSB572IDT | 36 V supply, 0.5 mV Vio (typ), 1.8 MHz GBP, 1.1 mA/quiescent current | Higher precision, wider supply, but higher power - suited for 16-bit ADC front-ends requiring <0.05% linearity | Select when Vio < 1 mV and supply > 30 V are mandatory; avoid if <1.5 mA total supply budget is constrained. |
| LM2902WDT | Automotive AEC-Q100 Grade 1 (–40 °C to +125 °C), 7 mV Vio (max), 300 µA/amplifier | Extended temperature and qualification for under-hood use, but looser offset spec than LM224ADT | Choose for production automotive ECUs requiring formal qualification; LM224ADT preferred for cost-sensitive industrial designs needing tighter Vio. |
Compared with TSB572IDT, LM224ADT trades bandwidth and offset precision for lower power and cost; versus LM2902WDT, it offers superior DC accuracy at the expense of automotive qualification - making it optimal for industrial control where 3 mV Vio and 800 V ESD define the performance boundary.
Availability
LM224ADT is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable logic controller (PLC) analog input modules, and DC power supply monitoring requiring stable component supply, long-term lifecycle support, and consistent parametric performance across manufacturing lots.
Supply support for LM224ADT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The LM224x series belongs to ST's general-purpose operational amplifier product line, engineered specifically for cost-effective, reliable signal conditioning in harsh industrial environments - emphasizing wide supply range, ground-sensing inputs, and robust ESD tolerance.
FAQ
What is the maximum output current capability of LM224ADT per amplifier?
Each amplifier in the LM224ADT can source or sink up to 40 mA continuously under typical conditions (VCC = 15 V, Tamb = 25 °C), with output voltage swing limited to within 1.5 V of either rail. Short-circuit duration is rated as infinite below 15 V supply, but simultaneous short-circuits on all four channels may cause thermal shutdown due to cumulative power dissipation exceeding 400 mW in SO14 package.
Does LM224ADT support true rail-to-rail input operation?
No - LM224ADT features input common-mode voltage range from 0 V to VCC – 1.5 V, meaning it accepts signals down to ground but cannot handle inputs within 1.5 V of the positive rail. However, its output is rail-to-rail, swinging within ~20 mV of VCC+ and VCC– under light load, enabling full utilization of ADC reference ranges in single-supply systems.
How does the LM224ADT differ from standard LM224DT in terms of electrical performance?
LM224ADT specifies tighter input offset voltage (3 mV max vs. 5 mV max for LM224DT), higher ESD rating (800 V HBM vs. 250 V), and same –40 °C to +105 °C temperature grade. Both share identical pinout, package options, and core specifications like gain bandwidth and supply current - making LM224ADT a drop-in upgrade where improved DC accuracy and robustness are required.
Can LM224ADT operate from a 3.3 V single supply?
Yes - LM224ADT is fully specified down to 3 V single supply, with guaranteed operation across its entire temperature range. At 3.3 V, it maintains 1.3 MHz GBP, 100 dB open-loop gain, and output swing from ~50 mV above GND to ~3.25 V, supporting interface with 3.3 V microcontrollers and low-voltage ADCs without level-shifting circuitry.
LM224ADT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 1.3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1.5mA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
LM224ADT FAQ
1.How can I place an order for LM224ADT through Aetrix?
Please submit a Request for Quotation (RFQ) for LM224ADT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM224ADT reliable?
The price and inventory of LM224ADT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM224ADT is usually 5 days.
3.What payment methods are accepted for LM224ADT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM224ADT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM224ADT?
LM224ADT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM224ADT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM224ADT?
For technical support, including LM224ADT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM224ADT requirements.
6.How does Aetrix verify that LM224ADT is sourced from the original manufacturer or authorized distributors?
All LM224ADT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM224ADT meets industry standards.
7.What is the process for return or replacement of LM224ADT?
All LM224ADT units undergo pre-shipment inspection (PSI). If there is an issue with LM224ADT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM224ADT part is unused and in its original packaging.
Return procedure for LM224ADT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM224ADT Tags
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LM358DT
STMicroelectronics
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LM358DR
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LM2904DR
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LM358ADR
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LM2904DGKR
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MCP6006UT-E/OT
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LM2902PWR
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LM2902DR
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